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Java > Open Source Codes > org > eclipse > jdt > internal > ui > preferences > formatter > FormatterTabPage


1 /*******************************************************************************
2  * Copyright (c) 2005, 2007 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.jdt.internal.ui.preferences.formatter;
12
13 import java.util.Map JavaDoc;
14
15 import org.eclipse.swt.SWT;
16 import org.eclipse.swt.events.SelectionAdapter;
17 import org.eclipse.swt.events.SelectionEvent;
18 import org.eclipse.swt.layout.GridData;
19 import org.eclipse.swt.widgets.Button;
20 import org.eclipse.swt.widgets.Composite;
21
22 import org.eclipse.jface.dialogs.IDialogSettings;
23
24 import org.eclipse.jdt.ui.JavaUI;
25
26 import org.eclipse.jdt.internal.ui.JavaPlugin;
27
28 public abstract class FormatterTabPage extends ModifyDialogTabPage {
29     
30     private final static String JavaDoc SHOW_INVISIBLE_PREFERENCE_KEY= JavaUI.ID_PLUGIN + ".formatter_page.show_invisible_characters"; //$NON-NLS-1$
31
32     private JavaPreview fPreview;
33     private final IDialogSettings fDialogSettings;
34     private Button fShowInvisibleButton;
35
36     public FormatterTabPage(IModificationListener modifyListener, Map JavaDoc workingValues) {
37         super(modifyListener, workingValues);
38         
39         fDialogSettings= JavaPlugin.getDefault().getDialogSettings();
40     }
41
42     protected Composite doCreatePreviewPane(Composite composite, int numColumns) {
43         
44         createLabel(numColumns - 1, composite, FormatterMessages.ModifyDialogTabPage_preview_label_text);
45         
46         fShowInvisibleButton= new Button(composite, SWT.CHECK);
47         fShowInvisibleButton.setText(FormatterMessages.FormatterTabPage_ShowInvisibleCharacters_label);
48         fShowInvisibleButton.setLayoutData(new GridData(SWT.RIGHT, SWT.TOP, true, false));
49         fShowInvisibleButton.addSelectionListener(new SelectionAdapter() {
50             public void widgetSelected(SelectionEvent e) {
51                 fPreview.showInvisibleCharacters(fShowInvisibleButton.getSelection());
52                 fDialogSettings.put(SHOW_INVISIBLE_PREFERENCE_KEY, fShowInvisibleButton.getSelection());
53             }
54         });
55         fShowInvisibleButton.setSelection(isShowInvisible());
56         
57         fPreview= doCreateJavaPreview(composite);
58         fDefaultFocusManager.add(fPreview.getControl());
59         fPreview.showInvisibleCharacters(fShowInvisibleButton.getSelection());
60         
61         final GridData gd= createGridData(numColumns, GridData.FILL_BOTH, 0);
62         gd.widthHint= 0;
63         gd.heightHint=0;
64         fPreview.getControl().setLayoutData(gd);
65         
66         return composite;
67     }
68
69     private boolean isShowInvisible() {
70         return fDialogSettings.getBoolean(SHOW_INVISIBLE_PREFERENCE_KEY);
71     }
72     
73     protected void doUpdatePreview() {
74         boolean showInvisible= isShowInvisible();
75         fPreview.showInvisibleCharacters(showInvisible);
76         fShowInvisibleButton.setSelection(showInvisible);
77     }
78
79 }
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